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nicoc-tem2

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Table of Contents

Does bacteria grow faster on steak or chicken. I think meat type does affect bacterial growth and that chicken will grow it faster then on steak. I found that i had to keep the meat types away from each other because the bacteria will mix. It will also grow better in a warm and moist area. First you get some steak and chicken, then put the pieces into 2 ½ cm pieces by 3 cm pieces, then let them sit out for 2 days, then take a cotton swab and swab the bacteria into a plate of gelton, let it grow, then collect data. The relationship between the independent and dependent variable was strong. Yes i was able to answer the experiment question. My experiment had a few problems like the gelton turned into a liquid because the incubator was to hot and bacteria didn't grow but they were easy to fix.This data could help restaurants learn about how different types of meat grow bacteria faster and what temperatures they should keep the meat at so the meat wont grow bacteria. I could have done more background research and i could have done more trials to get a better percentage.I found that steak grew bacteria faster then the chicken did by a good amount. My hypothesis was wrong. At the end of the experiment the steak had a total of 148% out of 500%. Chicken ended up with 106% out of 500%. There for steak grows bacteria faster then chicken.

Nick's Cool Bactria Project



Problem Scenario



Broad Question

Does meat type affect bacteria growth rate

Specific Question

Does bacteria grow faster on steak or chicken

Hypothesis

I think bacteria will grow faster on chicken than on steak

Graph of Hypothesis

nicoc_tem2_hypothesis_graph.JPG
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Variables

Independent Variable: Amount Of Bacteria
Dependent Variable: Meat Type

Variables That Need To Be Controlled: Time meat has been siting out. Condition that the meat is in and the air it is in.

Vocabulary List That Needs Explanation


General Plan


Potential Problems And Solutions: Keep away from animals and little brothers or sisters.The bacteria could be deadly. A solution to this problem is keep your project at school where kids cant get to the meat.

Safety Or Environmental Concerns: Use gloves to handle the meat if you have to and then wash your hands. Don't eat the meat or put it near face.

Experimental Design

Number Of Trials: 10

Number Of Subjects In Each trial: 4 ounces of steak and 4 ounces of chicken

When data will be collected: Every day

Number of Observations: 1 steak and 1 chicken per day

Where will data be collected?: At school

Resources and Budget Table


Data Table


Time Line


Background Research

The bacteria needs to be grown in a warm area. It also has to be moist. if it is not then it wont grow as good as it would in a moist and worm area. i found that if i put bacteria on a pitrie dish and put it in an incubator then it will grow better. i also found that i you have the incubator to hot it will turn the gelton in the petri dish into a liquid and the bacteria wont grow. The temperature has to be over 63 degrees in order to grow.

There are a few things your going to want to do and know wile doing this project. If you have the two types of meat next to each other the bacteria will mix. This will then make your meat have close to the same amount. If that happens then it will mess your experiment up. Your also going to want to use gloves and maybe a mask because it can be deadly. Make sure people don't mess with it or it could hurt them or mess up the experiment.

Bacteria can be very dangerous. Some kinds can cause skin viruses, influenza, meningitis, and staph infections. Most of these can kill you. There are also so many kinds of bacteria. We only know of less then one percent of the kinds that exist. The average cell phone has one hundred times as much bacteria than a toilet seat does.


References

"Bacteria Growth Requirements." Archive Site Redirect. Web. 27 Mar. 2012. <http://archive.food.gov.uk/hea/teachers/plainenglish/part2.html>.
http://www.thaindian.com/newsportal/sci-tech/love-your-steak-rare-beware-deadly-bacteria_100113329.html

Detailed Procedure

First you get some steak and chicken.
Then put the pieces into 2 ½ cm pieces by 3 cm pieces
Then let them sit out for 2 days
Then take a cotton swab and swab the bacteria into a plate of gelton
Let it grow
Then collect data



Diagram


Photo List

Results

All Raw Data



Graphs

nicoc_tem2_results_graph.JPG

Photos


Data Analysis

  • The first trial i did, i measured the amount of bacteria i had on one plate of steak and on one plate of chicken. The first plate of steak was 52% full of bacteria and the first plate of chicken was 16% full of bacteria.
  • I did the same for the second plate of chicken and steak. The second plate of chicken was 19% full of bacteria and the second plate of steak had no bacteria growing on it.
  • The third plate of steak had no bacteria and the third plate of chicken had none either.
  • The fourth plate of chicken had no bacteria growing on it and the plate of steak had none either.
  • The fifth plate of steak was 22% full of bacteria and the fifth plate of chicken was 28% full of bacteria.

Conclusion

I found that steak grew bacteria faster then the chicken did by a good amount. My hypothesis was wrong. At the end of the experiment the steak had a total of 148% out of 500%. Chicken ended up with 106% out of 500%. There for steak grows bacteria faster then chicken.

Discussion

The relationship between the independent and dependent variable was strong. Yes i was able to answer the experiment question. My experiment had a few problems like the gelton turned into a liquid because the incubator was to hot and bacteria didn't grow but they were easy to fix.This data could help restaurants learn about how different types of meat grow bacteria faster and what temperatures they should keep the meat at so the meat wont grow bacteria. I could have done more background research and i could have done more trials to get a better percentage.

Benefit to Community and/or Science

My project will help people to know not to leave steak or chicken out for certain amounts of time. Scientists can also learn more about bacteria growth faster by using steak instead of chicken.

Abstract

Does bacteria grow faster on steak or chicken. I think meat type does affect bacterial growth and that chicken will grow it faster then on steak. I found that i had to keep the meat types away from each other because the bacteria will mix. It will also grow better in a warm and moist area. First you get some steak and chicken, then put the pieces into 2 ½ cm pieces by 3 cm pieces, then let them sit out for 2 days, then take a cotton swab and swab the bacteria into a plate of gelton, let it grow, then collect data. The relationship between the independent and dependent variable was strong. Yes i was able to answer the experiment question. My experiment had a few problems like the gelton turned into a liquid because the incubator was to hot and bacteria didn't grow but they were easy to fix.This data could help restaurants learn about how different types of meat grow bacteria faster and what temperatures they should keep the meat at so the meat wont grow bacteria. I could have done more background research and i could have done more trials to get a better percentage.I found that steak grew bacteria faster then the chicken did by a good amount. My hypothesis was wrong. At the end of the experiment the steak had a total of 148% out of 500%. Chicken ended up with 106% out of 500%. There for steak grows bacteria faster then chicken.